Free tool

Working time calculator

Start, end, break — that's it. Effective working time in seconds.

Your working time
7 h 45 min

The formula

Working time is the time between start and end, minus all breaks. In Switzerland, breaks are unpaid and don't count towards working time.

Working time = end − start − breaks

Mandatory breaks in Switzerland

Swiss labour law (ArG Art. 15) requires minimum breaks depending on daily working time:

Daily working timeMandatory break
From 5.5 hours15 minutes
From 7 hours30 minutes
From 9 hours60 minutes

Breaks over 30 minutes may be split. All breaks are generally unpaid unless your employment contract states otherwise.

Worked examples

Three typical Swiss workdays — calculated step by step.

Office day 8:00 – 17:30

Start 8:00, end 17:30, lunch break 60 min.

9h 30min − 60min = 8h 30min
8h 30min working time

Part-time 60 %

Start 9:00, end 15:15, break 30 min.

6h 15min − 30min = 5h 45min
5h 45min working time

Long day on a construction site

Start 7:00, end 18:00, breaks 60 min.

11h 00min − 60min = 10h 00min
10h working time

Decimal time ↔ hours:minutes

Payroll and quotes often use decimal hours. Here's how to convert:

Hrs:MinDecimal
0:150.25 h
0:300.50 h
0:450.75 h
1:101.17 h
7:307.50 h
8:258.42 h

Formula: minutes ÷ 60 + hours. Example: 8h 25min → 25 ÷ 60 + 8 = 8.42 h

Frequently asked questions

Calculate every day? Do it automatically with einzly.

einzly combines accounting and time tracking. The timer starts with one click, is stored per project, and is converted to a Swiss QR-Bill with one click. No Excel. No calculator.

  • Cross-tab timer, also on mobile
  • Timesheet PDF for clients
  • Convert directly to Swiss QR-Bill
To time tracking

Put the calculator away.

einzly records working time automatically, creates reports and invoices — everything in one tool for Swiss sole proprietors.

Try einzly 30 days free